Finding the Fourth Proportional to 9,603.57, 14,406.80 and 2,678.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,603.57 : 14,406.80 = 2,678.61 : x
2. Step 2: Convert to fraction form
   9,603.57/14,406.80 = 2,678.61/x
3. Step 3: Cross multiply
   9,603.57x = 14,406.80 × 2,678.61
4. Step 4: Simplify right side
   9,603.57x = 38,590,185.15
5. Step 5: Solve for x
   x = 38,590,185.15/9,603.57
6. Step 6: Final answer
   x = 4,018.32